V_2O_5/RGO纳米复合材料的制备及表征  

Preparation and Characterization of V_2O_5/RGO Nanometer Composites

作　　者：孔孟来[1] 姚亚东[1] 

机构地区：[1]四川大学材料科学与工程学院,四川成都610065

出　　处：《四川有色金属》2016年第2期59-61,共3页Sichuan Nonferrous Metals

基　　金：四川省科技厅科技支撑项目(2011gz0110)

摘　　要：通过简单的一步水热反应制备出V_2O_5/RGO纳米复合材料。采用XRD、SEM及电化学工作站对其结构、形貌和电化学性能进行了分析表征。结果表明,V_2O_5/RGO纳米复合材料中V_2O_5晶型为斜方晶相,复合材料中V为V＋4、V＋5两种价态,且V_2O_5/RGO的形貌为片状结构,该纳米复合材料在0.5mol/L K2SO4电解液中以5m V/s进行CV测试时,比电容可达208.04 F/g,而且其电化学窗口可以达到1.6V（-0.6~1.0V）,表明V_2O_5/RGO纳米复合材料有望成为一种潜在的超级电容器电极材料。V_2O_5/RGO nanocomposite was fabricated via a simple one-pot hydrothermal process. The structure,morphology and electrochemical performances of the as-prepared V_2O_5/RGO composite were characterized by XRD, SEM and electrochemical workstation, respectively.The results show that the crystal of V_2O_5 belongs to orthorhombic phase in the V_2O_5/RGO composite, and the valence state of V is V＋4,V＋5. Moreover, the shape of V_2O_5/RGO is sheet. What＇s more, the specific capacitance of the composite exhibites 208.04 F/g at a scan rate of 5 m V/s in 0.5mol/L K2SO4 electrolyte, besides, the electrochemical window can reach to 1.6V（-0.6~1.0V）, implying that the V_2O_5/RGO nanocomposite is a promising electrode material for supercapacitor.

关 键 词：氧化石墨烯 五氧化二钒 复合材料 电化学性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TB332